5. Topic 5(COLON) Electricity and DC Circuits
Lesson 5.5: Alternating Current And The Oscilloscope — Quiz
Test your understanding of lesson 5.5: alternating current and the oscilloscope with 5 practice questions.
Practice Questions
Question 1
What is the peak voltage of an alternating current if the root-mean-square (r.m.s.) voltage is $20 \text{V}$?
Question 2
What is the relationship between peak voltage and root-mean-square voltage for a sinusoidal waveform?
Question 3
If a cathode-ray oscilloscope shows a voltage waveform, which of the following measurements can it provide?
Question 4
What is the mean power dissipated in an alternating circuit with root-mean-square voltage $V_{rms} = 15 \text{V}$ and current $I_{rms} = 3 \text{A}$?
Question 5
If the peak current of an alternating current waveform is $10 \text{A}$, what is its root-mean-square (r.m.s.) value?